Annals of Occupational and Environmental Medicine

Ryun Ha

2 Articles

Research Article

Association between change in working time arrangements and sleep disturbance: Ryun Ha, Jae Bum Park, Kyung-Jong Lee, Sunguk Choi, Inchul Jeong; Ann Occup Environ Med 2020;32:e18. Published online June 18, 2020; DOI: https://doi.org/10.35371/aoem.2020.32.e18

Background

Change in working time arrangement (WTA) can be harmful to workers' sleep and health. This study aimed to investigate the association between change in working time arrangement and sleep disturbance.

Methods

This study used data from the Fifth Korean Working Condition Survey and included 33,203 paid workers. We performed a stratified analysis by sex. After dividing the participants into 6 groups based on whether or not they experienced WTA changes, and their weekly working hours (≤40, 41–52, ≥53 hours), we calculated odds ratio (OR) using the weekly working hours ≤40 hours and with no WTA change as the reference group.

Results

Of the 33,203 paid workers, participants who experienced change in working time arrangement had higher prevalence of all three types of sleep disturbance symptoms (difficulty in falling asleep, waking up repeatedly during sleep, and waking up with a feeling of exhaustion and fatigue) in both sexes. Compared to the reference group at 95% confidence interval (CI), the group with change in WTA showed elevated OR values of 1.91 (95% CI: 1.73–2.11), 1.93 (95% CI: 1.74–2.14), 2.47 (95% CI: 2.26–2.71) for male workers; and 1.93 (95% CI: 1.73–2.16), 2.02 (95% CI: 1.80–2.27), 2.24 (95% CI: 2.01–2.50) for female workers, for difficulty in falling asleep, waking up repeatedly during the sleep, waking up with a feeling of exhaustion, and fatigue, respectively.

Conclusions

Workers who experience change in work time arrangement show a high risk of sleep disturbance in both sexes.

Citations

Citations to this article as recorded by

Diversity of flexible working time arrangements and workers' health: An analysis of a workers’ panel and linked employer-employee data for France
Christine Erhel, Mathilde Guergoat-Larivière, Malo Mofakhami
Social Science & Medicine.2024; 356: 117129. CrossRef

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Research Article

The association between dependent self-employment and self-reported depression/anxiety and sleep disorder in South Korea: Guyeon Won, Jae Bum Park, Kyung-Jong Lee, Ryun Ha, Seungho Lee, Inchul Jeong; Ann Occup Environ Med 2019;31:e13. Published online July 29, 2019; DOI: https://doi.org/10.35371/aoem.2019.31.e13

Abstract PDF

Background

Dependent self-employment is precarious employment, which can be vulnerable to mental health problems. This study aimed to investigate the association of dependent self-employment with depression, anxiety, and sleep disorder in South Korea.

Methods

This study used data from the Fourth Korean Working Conditions Survey and included 32,691 paid workers. Dependent self-employment and self-reported depression/anxiety, and sleep disorder were investigated using a questionnaire. Logistic regression analysis was performed to investigate the association between dependent self-employment and mental health problems.

Results

Of the 32,691 paid workers, 2,371 (7.3%) were dependent self-employed workers. The odds ratio (OR) of dependent self-employment for self-reported depression/anxiety was 1.78 (95% confidence interval [CI]: 1.29–2.45) and the OR of dependent self-employment for self-reported sleep disorder was 1.26 (95% CI: 1.01–1.59) compared to other paid workers.

Conclusions

Dependent self-employment is related to an increased risk of self-reported depression/anxiety and sleep disorder in South Korea.

Citations

Citations to this article as recorded by

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Scientific Reports.2025;[Epub] CrossRef
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Annals of Occupational and Environmental Medicine.2022;[Epub] CrossRef
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